Machine for sharpening or shaping drills.



4 Sheets-Sheet l.

No. 667,]87. Patented Feb. 5, l90l.

A. CARSTENS.

MACHINE FOR SHABPENING OR SHAPING DBILLS.

(Application filed Aug. 25, 1900.)

(No Nodal.)

m Jlllllllm *3 u l v g JIIIZIIHEIL wiigess'zs Patented Fab. 5,1901. A.BARSTENS.

MACHINE FOR SHABPENING 0R SHAPING DRILLS.

- (Applicltion mm Aug. 25, 1900.)

4 Sheets8heet 2.

(No Model.)

v Wi'hyssas L/ m: mums s 00.. PHOTO-H1710" wnsumamu u c No. 667,!87.Patented Feb. 5, IBM.

A. CARSTENS.

MACHINE FOR SHARPENING 0R SHAPING DRILLS.

(Application filed Aug. 25, 1900.

4 Sheets$heat 3.

(No Model.)

I jlgaegimw r I a Wilgessas Patented Feb. 5, I901.

4 Shaets8heat 4.

A. CARSTENS. HAGHINE FORSHARPENING'OR SHAPING DRILLS.

rA umibn filed Aug. 25, 1900.

(ll 0 Nodal.)

Kym/v? &

Aiforgeys JNrrEn TATES ALEXANDER CARSTENS, OF LEADVILLE, COLORADO.

MACHINE FOR SHARPENING OR SHAPING DRILLS.

SPECIFICATION forming part of Letters Patent No. 667,187, dated February5, 1901. A li atio filed August 25, 1900. Serial No. 28,071. (No model.)

To all whom it may concern:

Be it known that I, ALEXANDER CARSTENS, a citizen of the United States,residing at Leadville, in the county of Lake and State of 0010- rado,have invented a new and useful Machine for Sharpening or ShapingRock-Drills and other Tools, of which the following is a specification.

My invention is an improved machine for sharpening and shapingrock-drills and other tools-such as moils, gads, tools forchanneling-machines, gadders, stone-cutters tools, bits for certainforms of coal mining machines, and the like.

One object of my invention is to provide a machine which is adapted tofirst form and sharpen the edge of the tool and then shape and size thehead or bit thereof without removing the tool from the machine, so thatthe operations of forming and sharpening the edge of the tool andshaping or sizing the head or hit thereof may be performed one after theother without removing the tool from the machine during the process andso that the tool is entirely finished by the machine.

A further object of my invention is to effect improvements whereby themachine is adapted for entirely forming and sharpening the tool withoutcutting off and wasting any of the metal of which the tool is composed.

Afurther object of myinvention is to effect improvements in theconstruction of the die block and dolly-holder, whereby the same areprevented from'becoming unduly heated while the machine is in operation.

A further object of my invention is to efiect improvements in themachine and in the dieblock and dolly-holder whereby the die-block anddolly-holder are provided with a plurality of dies and dollies which maybe of difierent forms and sizes, adapted for sharpening and shapingtools of various kinds and sizes,and which may be readily adjusted onthe machine to fit the same for performing any desired variety of work.

A further object of my invention is to effect improvements in theconstruction of the vise for clamping the tool while the same is beingshaped and sharpened and in the mechanism for operating the vise.

A further object of my invention is to effect improvements in the meansfor feeding the tool alternately to the dolly and'to the matrix in theshaping and sizing die, so that the operations of forming and sharpeningthe edge and of sizing and shaping the tool may be successivelyperformed by the machine.

A further object of my invention is to effect improvements in theconstruction of the frame of the machine.

A further object of my invention is to efiect improvements in theconstruction of the slide and the fluid-pressure cylinder.

With these and other ends in view my invention consists in the peculiarconstruction and combination of devices hereinafter fully set forth, andpointed out in the claims.

In the accompanying drawings, Figure 1 is partly a side elevation andpartly a vertical longitudinal sectional view of a machine forsharpening and shaping rock-drills and other tools constructed inaccordance with my invention. Fig. 2 is a top plan view of the same.Fig. 3 is a front elevation of the same. Fig. 4 is a rear elevation ofthe same. Fig. 5 is a detail perspective view of the die-block anddolly-holder. Fig. 6 is a rear or exterior elevation of thedolly-holder, showing the dollies disposed therein. Fig. 7 is a detailelevation of the die-block. Fig. 8 is a detail sectional view throughthe die block and dolly-holder, taken on the plane indicated by the linea a of Fig. 6. Fig. 9 is a horizontal sectional view of the same, takenon the plane indicated by the line b b of Fig. 8. Fig. 10 is a detailperspective view of one of the dollies. Fig. 11 is a detail sectionalview taken on the line 0 c of Fig. 1.

The frame 1 of the machine in the embodiment of my invention here shownis formed of a single casting. A horizontally-disposed bed 2 is formedon one end of the frame, and the latter is further provided with avertically-disposed bed 3 and with guideways 4, which are disposedhorizontally and are formed in the sides 5 of the frame. The sides 5 arepreferably inclined and converge upwardly, as shown, and are closedtogether at the outer end of the frame, as at 6, the end of the frameunder the guideways 4 being open, as at '7.

A power-hammer 8 of suitable construction which may be operated bysteam, compressed air, or other suitable fluid pressure is bolted on thebed 2, as shown.

The bed 3 is provided with a vertical guideway 9,in which is fitted avertically-adj ustable die-block 10, which is of the form here shown. Aguide-plate 11, which is bolted on the base of the bed 3, secures thevertically-adjustable die-plate in its containing guideway 9. Adolly-holder 12, which corresponds in height and Width with thedie-block, is provided with a rahbet 13 on its inner side and is fittedon the outer side of the die-block and is secured thereto by bolts 14.The bed 3 is provided with a feed-opening 15 and the die-block isprovided with a series of openings 16, which are adapted to successivelyregister with the said opening 15 when the die-block is adjusted in thebed Any suitable number of the openings 16 may be provided, and at theinner end of each of the said openings is formed a matrix 17 of a diefor shaping and gaging or sizing the bits on the ends of the drills orother tools. It will he observed by reference to the drawings, moreparticularly by reference to Fig. '7, that the matrices of the dies arevertically disposed or disposed in a vertical line. The openings 16 arewidened in their centers to form clearance-grooves 18, which aredisposed in horizontal lines or at right angles to the plane in whichthe matrices are disposed. The dolly-holder is provided with a series ofguide-openings 19, which register with the openings 16 in the die-blockand form the guides for the dollies 20. The length of each dolly exceedsthe thickness of the dolly-holder, and each dolly is provided at itsouter end with a head 21, adapted to be struck by the head 22 of thehammer, and has at its inner end a sharpening matrix or die 23, in whichthe edge of the tool is formed and sharpened. In one side of each of thedollies is a groove 24, and the said grooves are engaged by the innerends of screws 26. Said screws and said grooves, as will be understood,coact to limit the horizontal longitudinal movements of the dollies inthe openings 19.- It will be understood that the dollies and the dies inthe die-block may be of any required style and size and adapted tosharpen and shape the bits of such tools as rock-drills, moils,gads,channeling-tools, gadders, stone-cutters tools, and the like.

It is desirable to prevent the die-block and dolly-holder from becominginjured when the machine is in operation, and to effect this I providethe die-block and dolly-holder with series of communicating channels a bc. The channels Ct are the openings for the bolts 14, which secure thedie-block and dolly-holder together, the shanks of the said bolts 14intermediate of the headed and threaded ends thereof being reduced, sothat spaces are formed around them in the said channels. The channels I)are drilled transversely in the dolly-holder from one side thereof andserve to connect the respective pairs of the channels a, the outer endsof said channels I) being closed by screw-plugs cl. The channels 0 arevertically drilled in the die-block and connect the channels a togetherin vertical series. The upper end of one of the channels c is closed bya suitable screw-plug, as at e, and the lower end of the other channel 0is closed by suitable screw-plugs f. Hence water introduced to the upperend of one of the channels 0 at the point g by means of a suitableflexible tube leading from a source of water will be caused to circulatethroughout the connected series of channels (6 b c in the die-block anddolly-holder and to be discharged at the point h. It will be understoodthat the circulating water will serve to keep the die-block anddolly-holder from becoming unduly heated.

The die-block is provided in one side with a series ofadjusting-openings 27, which correspond in number with the openings 15and are appropriately located with reference to said openings. Alock-pin 28, which operates in an opening in one side of thehed 3 and inan opening in a suitable supportingbracket 29, which is bolted to saidbed, by engaging an appropriate opening 27 supports the die-block anddollyholder at any required adjustment. A horizontally-disposed slide 30operates in the guideways 4. A steam or other fluid-pressure cylinder 31depends from the lower side of and is carried by the said slide. As hereshown, the slide is a casting with which a depending hanger 32 and thecylinder 31 are integrally formed; but this construction may be variedwithout departing from the spirit of my invention. A

suitable operating-valve "to admit steam or other fluid to and exhaustthe same from said cylinder is provided with an operating-lever 33, bymeans of which the movement of the piston 34 in the cylinder may becontrolled. In the form of my invention here shown the piston is acasting, and a short rod 35 is formed integrally therewith and chamberedout at its outer end for a suitable distance and adapted to contain andform a seat for a link 36, which is pivoted at its inner end, as at 37,and thereby connected to the piston. On the slide 30, near the inner endthereof, is seated a block 38, which forms the lower jaw of a vise. Thesaid block is bolted to the said slide, as at 39, and an opening is madein the said slide under the said block. A block 41, which is verticallymovable and forms the upper jaw of the vise, is supported above theblock 38 by springs 42 and is guided by vertical pins 43, which connectthe said blocks 38 41 together. A pair of linklevers 44 have their upperends connected together by a shaft or pin 45, which bears on the upperblock or jaw 41 of the vise. The link levers operate in recesses orrabbets formed in the sides of the slide 30, and their lower ends areconnected together and to the outer ends of the link 36 by a pin orshaft 46. The lower end of a toggle-lever 47 is seated on said pin orshaft and the upper end of said toggle-lever is seated and fulcrumed ina recess 48 in the lower side of the lower block or jaw 38 of the vise.A shaft 49 is journaled in hearings in the sides of the frame 1, passesover the slide 30, and is provided with an cecentric-cam 50, whichcoacts with the block 42-and with stops 51, formed on the upper side ofsaid slide, to move the latter toward and from the die-block in the bed3. Said shaft 49 has at one end an operating-lever 52.

The operation of my invention is as follows: Initially the slide ismoved outward from the bed 3 and the piston is in the outer end of thecylinder, thereby disposing the link-levers 44 at an inclination and thetoggle-lever 4L7 at-asomewhat greater angle from the perpendicular. Thisinitial position of the machine is shown in Fig. 1. Assuming that thedie-block has been appropriately adjusted, the heated tool which is tobe shaped and sharpened is inserted through the grooves in the coactingfaces of the blocks or jaws of the vise through the opening 15 and'through the drill-die opening 16 that registers therewith, with its bitdisposed horizontally in the clearance-grooves 18, which admit of thepassage thereof, and as the shoulders at the inner or upper side of thebit or head of the tool clear the face of the dieblock the tool isturned through a quarter of a circle to dispose the shoulders of thehead or hit thereof vertically and in line with the matrices of the die.Steam or other fluid pressure is then admitted to the outer end of thecylinderand the piston is forced inward in the cylinder, the link 36serving to swing the link-levers 44 to a vertical position and also movethe toggle-lever 47 to a vertical position, said toggle-lever and saidlinks coacting to move the upper block or jaw 41 of the vise downwardagainstthe tension of the springs 42 and to close the same upon theshank or other tool,thereby firmly holding the same in place; Thefeeding-lever 52 is now taken in hand, the hammer is started intooperation, and the tool is fed against the dolly,which is hammered untilit forms the required shape on the cutting edge of the bit or head ofthe tool. The motion of the feed-lever 52 is then reversed, causing theslide 30 and the vise which holds the tool to move backward and bringthe head of the tool into the matrices of the die, into which it ishammered to size and shape the head of the tool. The hammer is thenthrown out of operation and the finished drill or tool removed from thedieblock and vise.

Having thus described my invention, I claim-- 1. In a machine of theclass described, the frame having the horizontally-disposed bed for thepower hammer, the vertically disposed bed, and the die-block anddolly-holder having a plurality of dies and dollies and adjustable insaid vertically-disposed bed, substantially as described.

2. In a machine of the class described, the combination of apower-hammer and a die block, the one adjustable with relation to theother, said die-block having a plurality of dies, substantially asdescribed.

3. In a machine of the class described, the combination of apowerhammer, a die, a dolly in advance of the die, and a feedingmechanism to feed the work forward to the dolly and thereafter rearwardto the die, substantially as described.

4. In a machine of the class described, the combination of apowerhammer, a die, a dolly in advance of the die, a movable vise togrip the work, and a feed mechanism for said vise whereby the work maybe fed forward to the dolly and thereafter rearward to the die,substantially as described.

5. In a machine of the class described, the combination of apower-hammer, a die, a dolly in advance of the die, a vise to grip thework, a slide carrying said vise, and means to move said slide, andthereby feed the work forward to the dolly and rearward to the die,substantially as described.

6. In a machine of the class described, the combination of a die-blockhaving an opening therethrough and a die formed at the outer end of saidopening, a dolly in advance of said die, and means to feed the workthrough said opening forward to said dolly and rearward to said die,substantially as described.

7. In a machine of the class described, the die-block having a die onone side, an opening leading through said block to said die, saidopening having clearance-grooves disposed at an angle to the matrix ofthe die, substantially as described.

8. The combination of a slide, feed mechanism therefor, a vise carriedby said slide and having a movable jaw, a fluid-pressureoperatedmechanism, movable with said slide, a link connected to a movableelement thereof, a link-lever connecting said link and said movable jaw,and a toggle-lever connecting said link and a relatively-fixed point,substantially as described.

9. The combination ofarelatively-fixed die, a slide, feed mechanismtherefor, a vise carried by said slide and having a verticallymovablejaw, springs to support said jaw, a link-lever carried by said jaw and atogglelever hearing at one end against a relativelyfixed point andconnected to said link-lever, substantially as described.

10. The combination of a power-hammer, a bed having a feed-opening inline with the head of the hammer, a die-block having an opening in linewith said feed-opening and hammer-head, a die being formed at the outerend of said opening, a dolly-holder, a dolly therein, between said dieand hammer-head, and means to feed the work forward to the dolly andthen rearward to the die, substantially as described.

11. Adie-block, a dolly-holder bolted thereto, said block and holderhaving water-chan- IIO nels formed around their connecting-bolts,substantially as described.

12. A die-block and dolly-holder having registering boltopenings,connecting-bolts therein having their shanks intermediate of their headsand threaded ends reduced, and water channels communicating with saidbolt-openings, whereby the latter also form water-channels,substantially as described.

13. A die-block of the class described, having a feed-opening extendingtherethrough, which opening is wider in one direction than in another,and a matrix at one end of said opening, said matrix being Wider in onedirection than another, the respective widened portions of said openingand said matrix being disposed in planes at an angle to each other,substantially as described.

14. In a machine of the class described,-the

combination of a power-hammer, a bed having a feed-opening in line withthe head of the hammer, a feed slide having a workholder, means tooperate said feed-slide, an adjustable die-block on the bed and having aplurality of dies and feed-openings, and a dolly-holder movable withsaid die-block and having a plurality of dollies registering with therespective dies, and a holder to secure the die-block and dolly-holderwhen adjusted, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

ALEXANDER OARSTENS.

Witnesses:

W. L. WILLIAMS, F. E. MERCEREAU.

